Capacitor Tin Alpha Emission Control
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Solution Overview
Problem
The miniaturization of electronic products and increased battery sizes lead to limitations on the number and size of passive elements and printed circuit boards, resulting in a demand for miniaturized, high-capacitance capacitors, but tin (Sn) used in these components emits alpha radiation, causing soft errors in semiconductor chips due to its high alpha particle emission rate.
Innovation Solution
A capacitor with a body comprising dielectric layers and internal electrodes, and external electrodes, where tin (Sn) is incorporated to maintain an alpha particle emission rate of 0.02 cph/cm2 or less, preventing soft errors by reducing radiation impact on adjacent semiconductor components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tin (Sn) is used in capacitors for miniaturization and high capacitance, then the capacitor can meet the demand for miniaturization and high capacitance, but the alpha particle emission rate increases causing soft errors in semiconductor chips
Solution Approach 1:
The patent applies parameter changes by controlling the alpha particle emission rate of tin to be 0.02 cph/cm² or less, transforming the harmful high-emission tin into low-emission tin through parameter control, thereby preventing soft errors while maintaining the capacitor's miniaturization and high capacitance properties
Solution Approach 2:
The patent converts the harmful alpha radiation property of tin into a beneficial low-emission characteristic by selecting tin with controlled emission rates, turning a potential source of soft errors into a reliable material that maintains electrical performance while minimizing radiation impact on adjacent semiconductor components
2Volume of moving object
If the size of passive elements is reduced to meet miniaturization demands, then the capacitor size decreases, but the alpha particle emission impact becomes more concentrated and harmful to adjacent semiconductors
Solution Approach 1:
The patent changes the material parameter by using tin with alpha particle emission rate of 0.02 cph/cm² or less, allowing the capacitor to be miniaturized without concentrating harmful radiation, as the low-emission tin maintains safety even at smaller sizes and higher density configurations
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The controlled alpha particle emission rate of the capacitor effectively minimizes soft errors in semiconductor devices by ensuring that the tin used in the capacitor does not contribute to radiation-induced charge disturbances, enhancing the reliability of memory elements and logic circuits.
Implementation Method 1
Sn may emit a large amount of alpha radiation, and when Sn is disposed in the vicinity of a semiconductor chip, for example due to the miniaturization and densification thereof, a soft error causing loss of information of a memory cell may occur
Data Source
AI summary
A capacitor includes a body including dielectric layers and internal electrodes; and external electrodes disposed on the body. The capacitor includes Sn, the Sn having an alpha particle emission rate equal to or less than 0.02 cph/cm2.